Acta Geologica 33. (1990)

1-4. szám

ACTA GEOLOGICA HUNGARICA Vol. 33 Nos 1-4 CONTENTS Microfaunistic investigations of Hungarian Urgonian limestones (Barremian - Albian). F. Schlagintweit ................................................................................................................................ 3 Fission track dating of tuffaceous Eocene formations of the North Bakony Mountains (Transdanubia, Hungary). I. Dunkl .............................................................................................. 13 Folded Oligocène beds in Budapest. Z. Balia, A. Dudko ................................................................ 31 Very low- and low-grade metamorphic rocks in the pre-Tertiary basement of the Drava Basin, SW-Hungary. I: mineral assemblages, illite "crystallinity", bQ data, and problems of geological correlation. P. Árkai ........................................................................ 43 Very low- and low-grade metamorphic rocks in the pre-Tertiary basement of the Drava Basin, SW-Hungary. II. K-Ar and Rb-Sr isotope geochronologic data. Kad. Balogh, A. Kovach. Z. Pécskay, É. Svingor, P. Árkai .......................................................................... 69 Petrology of some HP-metavolcanics from the Piedmont Zone, Western Alps ophiolite. I. Kubovics, A.M. Abdel-Karim ...................................................................................................... 79 Diagenetic transformation of magnesium-calclte in echinoderm, a monocrystalline rock­forming carbonate skeleton. M.N. Oti, L.U.J.T. Oqbuji ...................................................... 97 Geochemistry of Mg-Al rich metagabbros and Fe-Ti rich metagabbros and albitites from the Western Alps ophiolites. A.M. Abdel-Karim, I. Bilik .................................................. 105 Trace elements in the Ajka-II Upper Cretaceous coal basin, Transdanubia, Hungary. 0. Tomschey .......................................................................................................................................... 121 Trench formation on a compressed continental plate: a model for Bakony tectonic unit. E. Dongarov, A. Gurenkov.................................................................................................................. 137 Planning of experimental complex airborne geophysical and geochemical measurements for hydrocarbon prognostic purposes. S. Tenkei ............................................................................ 147 Possibilities of mineralogical-petrological application of the interference colour stabilized polarization contrast microscope. J. Vincze .................................................... 163 BOOK REVIEWS Helmut Holder: Kurze Geschichte der Geologie und Paläontologie. T. Рока ............................ 169 Knut BjeSrlykke: Sedimentology and Petroleum Geology. T. Pdka ................................................. 170 Sawkins F.3. : Metal Deposits in Relation to Plate Tectonics. G, Dobosi ............................ 172 Eds E.G. Kauffman and O.H. Walliser: Extinction Events in Earth History. A. Galácz ----- 173 H. Chamley: Clay Sedimentology. P. Árkai .......................................................................................... 174 Hervé Chamley: Sedimentology. Z. Puskás ............................................................................................ 175

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